Antistatic Layers in Flexible OLED Adhesive Bonding

An antistatic layer is introduced as an intermediary between the adhesive member and the substrate. This layer serves as a mediator that prevents static electricity generation during the adhesion process while still allowing the adhesive member to bond to the substrate. The antistatic layer absorbs or dissipates the static charge that would otherwise be generated by the contact and separation of the release film and substrate.

The patent converts the potentially harmful static electricity generation into a beneficial antistatic function by using materials with specific triboelectric properties. The antistatic layer is designed to generate a controlled static charge that counteracts harmful static discharge, or to have low friction coefficients that prevent excessive charge buildup during the manufacturing process.

The adhesive member is designed as a composite structure with multiple layers, each having different properties. One layer provides strong adhesion to the substrate, while another layer provides flexibility and conformability. This composite structure allows the adhesive member to simultaneously achieve high bonding strength and the flexibility needed for applications like flexible displays and wearable devices.

The patent employs adhesive materials with adjustable parameters such as glass transition temperature, crosslinking density, and polymer chain length. By optimizing these parameters, the adhesive member can achieve a balance between adhesion strength and flexibility. For example, using adhesives with appropriate Tg values allows the material to be rigid enough for strong bonding yet flexible enough to conform to curved or flexible substrates.